Q: Is 243,724 a Prime Number?
A: No, 243,724 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 243724 can be evenly divided by 1 2 4 13 26 43 52 86 109 172 218 436 559 1,118 1,417 2,236 2,834 4,687 5,668 9,374 18,748 60,931 121,862 and 243,724, with no remainder.
Since 243,724 cannot be divided by just 1 and 243,724, it is not a prime number.